<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>04_文字处理</title>
    <style>
        p{
            font-size: 20px;
            font-family: "黑体","宋体","微软雅黑";
        }
        a{
            text-decoration: underline;
            text-decoration: line-through;
            text-decoration: overline;
            text-decoration: none;
        }
        div{
            width: 200px;
            height: 70px;
            border: 5px solid #000;
            text-align: center;
            line-height: 70px;
        }
        span{
            font-weight: bold;
            font-weight: lighter;
            font-weight: normal;
            font-style: italic;
        }
        h4{
            text-shadow: 5px 5px 5px red;
        }
    </style>
</head>

<body>
  <p>我是测试文字 123 ABC abc</p>
  <a href="#">我是超链接</a>
  <div>我是块级元素div</div>
  <span>我是行内元素span</span>
  <h4>我是标题</h4>
</body>
</html>